Analysis
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max time kernel
91s -
max time network
123s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
25-05-2024 00:20
Static task
static1
Behavioral task
behavioral1
Sample
9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940.exe
Resource
win10v2004-20240508-en
General
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Target
9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940.exe
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Size
2.0MB
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MD5
e3b4d6578a3841d11bd4190d18f0138e
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SHA1
6dd1bccc9ae7bf3b20cc59782cf01abac15db935
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SHA256
9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940
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SHA512
ca64f8d26e6c98c7d859d96130695bebff9ac50fb33325c8da265580a8bc207f959ec61365df85e7f067508faf4d68fc0db301f03c69dbb57a503a00dfcb84c3
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SSDEEP
49152:s4K3x1vUiJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18itIuoITsdZ
Malware Config
Extracted
stealc
Extracted
vidar
https://steamcommunity.com/profiles/76561199689717899
https://t.me/copterwin
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
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Detect Vidar Stealer 14 IoCs
Processes:
resource yara_rule behavioral2/memory/2656-2-0x0000000004020000-0x0000000004169000-memory.dmp family_vidar_v7 behavioral2/memory/836-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/836-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/836-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/836-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/836-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/836-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/836-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/836-54-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/836-55-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/836-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/836-67-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/836-68-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/836-71-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4314.tmppid process 836 kat4314.tmp -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Suspicious use of SetThreadContext 1 IoCs
Processes:
9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940.exedescription pid process target process PID 2656 set thread context of 836 2656 9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940.exe kat4314.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4314.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4314.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 3108 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat4314.tmppid process 836 kat4314.tmp 836 kat4314.tmp 836 kat4314.tmp 836 kat4314.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940.exekat4314.tmpcmd.exedescription pid process target process PID 2656 wrote to memory of 836 2656 9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940.exe kat4314.tmp PID 2656 wrote to memory of 836 2656 9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940.exe kat4314.tmp PID 2656 wrote to memory of 836 2656 9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940.exe kat4314.tmp PID 2656 wrote to memory of 836 2656 9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940.exe kat4314.tmp PID 2656 wrote to memory of 836 2656 9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940.exe kat4314.tmp PID 2656 wrote to memory of 836 2656 9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940.exe kat4314.tmp PID 2656 wrote to memory of 836 2656 9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940.exe kat4314.tmp PID 2656 wrote to memory of 836 2656 9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940.exe kat4314.tmp PID 836 wrote to memory of 1492 836 kat4314.tmp cmd.exe PID 836 wrote to memory of 1492 836 kat4314.tmp cmd.exe PID 836 wrote to memory of 1492 836 kat4314.tmp cmd.exe PID 1492 wrote to memory of 3108 1492 cmd.exe timeout.exe PID 1492 wrote to memory of 3108 1492 cmd.exe timeout.exe PID 1492 wrote to memory of 3108 1492 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940.exe"C:\Users\Admin\AppData\Local\Temp\9e3efe108d57395a34b7b5b2510f1478d54622af3e12a4b98f24332f7905a940.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4314.tmpC:\Users\Admin\AppData\Local\Temp\kat4314.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4314.tmp" & rd /s /q "C:\ProgramData\GIDAECGDAFBA" & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4314.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/836-22-0x000000001B990000-0x000000001BBEF000-memory.dmpFilesize
2.4MB
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memory/836-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/836-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/836-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/836-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/836-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/836-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/836-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/836-71-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/836-68-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/836-67-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/836-54-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/836-55-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/836-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2656-0-0x00000000008C0000-0x00000000008C1000-memory.dmpFilesize
4KB
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memory/2656-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/2656-2-0x0000000004020000-0x0000000004169000-memory.dmpFilesize
1.3MB